Home / 939,315.66-1,296,256.05-509,595.72

Finding the Fourth Proportional to 939,315.66, 1,296,256.05 and 509,595.72

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Solution

The fourth proportional to 939,315.66, 1,296,256.05 and 509,595.72 is: 703,242.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,315.66 : 1,296,256.05 = 509,595.72 : x
  2. Step 2: Convert to fraction form
    939,315.66/1,296,256.05 = 509,595.72/x
  3. Step 3: Cross multiply
    939,315.66x = 1,296,256.05 × 509,595.72
  4. Step 4: Simplify right side
    939,315.66x = 660,566,535,104.11
  5. Step 5: Solve for x
    x = 660,566,535,104.11/939,315.66
  6. Step 6: Final answer
    x = 703,242.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.